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SPECIFICATION FOR APPROVAL. ◆. APPROVED BY. APPROVED BY. SIGNATURE. SIGNATURE. APPROVED BY. SIGNATURE. C. I. Kim / S.Manager. /. REVIEWED BY. REVIEWED BY. B. T. Jang / Manager B. D. Jun / Manager. /. PREPARED BY. PREPARED BY. /. C. H. Yun / Engineer C.K.D / Engineer.

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slide1

SPECIFICATION

FOR

APPROVAL

APPROVED BY

APPROVED BY

SIGNATURE

SIGNATURE

APPROVED BY

SIGNATURE

C. I. Kim / S.Manager

/

REVIEWED BY

REVIEWED BY

B. T. Jang / Manager

B. D. Jun / Manager

/

PREPARED BY

PREPARED BY

/

C. H. Yun / Engineer

C.K.D / Engineer

Products Engineering Dept.

LG Display Co., Ltd

Please return 1 copy for your confirmation with

your signature and comments.

slide4

1

1366

EEPROM Block

for EDID

User connector 40 Pin

TFT-LCD Panel

(HD, GIP, TN)

Timing Control

Block

LVDS1port

EPI

768

DVCC

CLKs

AVCC, AVDD

VGH, VGL, GMA

Power

Block

VCC

Source Driver

(Bottom Bent)

GIP CLKs, DSC

VLED

LED Driver

Block

VOUT_LED

LED Backlight Ass’y

LED_EN

PWM

FB1~4

EDID signal & Power

Control & Data

Power

1. General Description

The LP156WH4 is a Color Active Matrix Liquid Crystal Display with an integral LED backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally white mode. This TFT-LCD has 15.6 inches diagonally measured active display area with HD resolution (1366 horizontal by 768 vertical pixel array). Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is determined with a 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144 colors. The LP156WH4 has been designed to apply the interface method that enables low power, high speed, low EMI. The LP156WH4 is intended to support applications where thin thickness, low power are critical factors and graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the LP156WH4 characteristics provide an excellent flat display for office automation products such as Notebook PC.

General Features

slide5

90%

80%

60%

60

Wet Bulb

Temperature [℃]

50

Humidity[(%)RH]

Storage

40%

40

30

Operation

20

20%

10

0

10%

-20

0

10

60

70

80

20

30

40

50

Dry Bulb Temperature [℃]

2. Absolute Maximum Ratings

The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.

Table 1. ABSOLUTE MAXIMUM RATINGS

Note : 1. Temperature and relative humidity range are shown in the figure below.

Wet bulb temperature should be 39C Max, and no condensation of water.

slide6

3. Electrical Specifications

3-1. Electrical Characteristics

The LP156WH4 requires two power inputs. The first logic is employed to power the LCD electronics and to drive the TFT array and liquid crystal. The second backlight is the input about LED BL.with LED Driver.

Table 2. ELECTRICAL CHARACTERISTICS

slide7

Note)

1. The measuring position is the connector of LCM and the test conditions are under 25℃, fv = 60Hz,

Black pattern.

2. The specified Icc current and power consumption are under

the Vcc = 3.3V , 25℃, fv = 60Hz condition and Mosaic pattern.

3. This Spec. is the max load condition for the cable impedance designing.

The below figures are the measuring Vcc condition and the Vcc control block LGD used.

The Vcc condition is same as the minimum of T1 at Power on sequence.

3.3V

Rising time

Vcc

90%

10%

0V

0.5ms

4. This impedance value is needed for proper display and measured form LVDS Tx to the mating connector.

5. The measuring position is the connector of LCM and the test conditions are under 25℃.

6. The current and power consumption with LED Driver are under the Vled = 12.0V , 25℃, Dimming of

Max luminance and White pattern with the normal frame frequency operated(60Hz).

7. The below figures are the measuring Vled condition

and the Vled control block LGD used.

VLED control block is same with Vcc control block.

8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.

9. If Jitter of PWM is bigger than maximum, it may induce flickering.

10. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent

to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for

more consistent brightness control at any specific level desired.

11. The life time is determined as the time at which brightness of LCD is 50% compare to that of minimum

value specified in table 7. under general user condition.

12.0V

Rising time

VLED

90%

10%

0V

0.5ms

slide8

1

40

3-2. Interface Connections

This LCD employs two interface connections, a 40 pin connector used for the module electronics interface and the other connector used for the integral backlight system.

Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)

[LCD Module Rear View]

slide9

3-3. LVDS Signal Timing Specifications

3-3-1. DC Specification

3-3-2. AC Specification

slide10

Freq.

Fmax

Fcenter * FDEV

Fcenter

Fmin

1

FMOD

Time

RCLK+

R

3

R

2

R

1

R

0

G

0

R

5

R

4

R

3

R

2

R

1

R

0

G

0

R

5

R

4

RA+/-

G

4

G

3

G

2

G

1

B

1

B

0

G

5

G

4

G

3

G

2

G

1

B

1

B

0

G

5

RB+/-

RC+/-

B

5

B

4

B

3

B

2

DE

VSYNC

HSYNC

B

5

B

4

B

3

B

2

DE

VSYNC

HSYNC

RD+/-

G

7

G

6

R

7

R

6

X

B

7

B

6

G

7

G

6

R

7

R

6

X

B

7

B

6

Previous

(

N

-

1

)

th Cycle

Current

(

Nth

)

Cycle

Next

(

N

+

1

)

th Cycle

< Clock skew margin between channel >

< Spread Spectrum >

3-3-3. Data Format

1) LVDS 1 Port

< LVDS Data Format >

slide11

Data Enable, Hsync, Vsync

tHP

Hsync

tCLK

tWH

0.5 Vcc

DCLK

Condition : VCC =3.3V

tHFP

tWHA

tHBP

High: 0.7VCC

Data Enable

Low: 0.3VCC

tVP

tWV

Vsync

tVFP

tWVA

tVBP

Data Enable

3-4. Signal Timing Specifications

This is the signal timing required at the input of the User connector. All of the interface signal timing should be satisfied with the following specifications and specifications of LVDS Tx/Rx for its proper operation.

Table 4. TIMING TABLE

3-5. Signal Timing Waveforms

slide12

3-6. Color Input Data Reference

The brightness of each primary color (red,green and blue) is based on the 6-bit gray scale data input for the

color ; the higher the binary input, the brighter the color. The table below provides a reference for color

versus data input.

Table 5. COLOR DATA REFERENCE

slide13

90%

90%

Power Supply Input

VCC

10%

10%

0V

T4

T3

T7

T1

T2

Valid Data

Interface Signal, Vi

LVDS

0V

T6

T5

3.0V

3.0V

LED BL

On/Off Control Signal

LED_EN

0V (Off)

T10

T9

Valid Data

LED BL

Dimming Control Signal

PWM

0V (Low)

T8

T11

90%

90%

LED Driver Input Voltage

VLED

0V

T13

T12

10%

10%

3-7. Power Sequence

Table 6. POWER SEQUENCE TABLE

Note)

1. Do not insert the mating cable when system turn on.

2. Valid Data have to meet “3-3. LVDS Signal Timing Specifications”

3. LVDS, LED_EN and PWM need to be on pull-down condition on invalid status.

4. LGD recommend the rising sequence of VLED after the Vcc and valid status of LVDS turn on.

slide14

4. Optical Specification

Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30 minutes in a dark environment at 25C. The values specified are at an approximate distance 50cm from the LCD surface

at a viewing angle of  and  equal to 0.

FIG. 1 presents additional information concerning the measurement equipment and method.

FIG. 1 Optical Characteristic Measurement Equipment and Method

LCD Module

Pritchard 880 or

equivalent

Optical Stage(x,y)

50cm

Table 9. OPTICAL CHARACTERISTICS

Table 7. OPTICAL CHARACTERISTICS

Ta=25C, Vcc=3.3V, fV=60Hz, fCLK= 70.0MHz

slide15

Note)

1. Contrast Ratio(CR) is defined mathematically as

Surface Luminance with all white pixels

Contrast Ratio =

Surface Luminance with all black pixels

2. Surface luminance is the average of 5 point across the LCD surface 50cm from the surface with

all pixels displaying white. For more information see FIG 1.

LWH = Average(L1,L2, … L5)

3. The variation in surface luminance , The panel total variation ( WHITE) is determined by measuring LN

at each test position 1 through 13 and then defined as followed numerical formula.

For more information see FIG 2.

Maximum(L1,L2, … L13)

WHITE =

Minimum(L1,L2, … L13)

4. Response time is the time required for the display to transition from white to black (rise time, TrR) and

from black to white(Decay Time, TrD). For additional information see FIG 3.

5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are determined

for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the

LCD surface. For more information see FIG 4.

6. Gray scale specification * fV = 60Hz

slide16

H

A

10mm

10mm

6

7

8

3

2

B

H,V

: ACTIVE AREA

V

A

: H/4 mm

9

10

1

B

: V/4 mm

POINTS: 13 POINTS

4

5

13

11

12

Active Area

Tr

Tr

D

R

%

100

90

Optical

Response

10

0

white

white

black

FIG. 2 Luminance

<Measuring point for Average Luminance & measuring point for Luminance variation>

FIG. 3 Response Time

The response time is defined as the following figure and shall be measured by switching the input signal for “black” and “white”.

FIG. 4 Viewing angle

<Dimension of viewing angle range>

slide17

5. Mechanical Characteristics

The contents provide general mechanical characteristics for the model LP156WH4. In addition the figures

in the next page are detailed mechanical drawing of the LCD.

slide18

<FRONT VIEW>

Note) Unit:[mm], General tolerance: 0.5mm

slide19

<REAR VIEW>

Note) Unit:[mm], General tolerance: 0.5mm

slide20

[ DETAIL DESCRIPTION OF SIDE MOUNTING SCREW ]

* Mounting Screw Length (A)

= 2.0(Min) / 2.5(Max)

* Mounting Screw Hole Depth (B)

= 2.5(Min)

* Mounting hole location : 3.1(Typ)

* Torque : 2.0 kgf.cm(Max)

(Measurement gauge : torque meter)

Notes : 1. Screw plated through the method of non-electrolytic nickel plating is preferred

to reduce possibility that results in vertical and/or horizontal line defect due to

the conductive particles from screw surface.

slide21

Sponge

System Cover

LGD Proposal for system cover design.(Appendix)

Max Thickness

LCM Reflector Side

A Boundary Line

T-CON

T-CON

GOOD

NO GOOD

1.If system antenna is overlapped with T-CON,it might be cause the noise.

slide22

LGD Proposal for system cover design.

COF

(D-IC)

Hinge

Side Mount Screw Hole (4ea)

GAP:Min2.0mm

(“L” TYPE)

(“I” TYPE)

Checking the path of the System wire.

#2

#1

#3

Ok

Bad

Good

slide23

LGD Proposal for system cover design.

bracket

System cover inner side.

User connector

area.

A-1

A

User connector

Cable pathway.

cut

A~A-1

FPC:Flexible Printed Circuit.

slide24

6. Reliability

Environment test condition

{ Result Evaluation Criteria }

There should be no change which might affect the practical display function when the display quality

test is conducted under normal operating condition.

slide25

7. International Standards

7-1. Safety

a) UL 60950-1, Second Edition, Underwriters Laboratories Inc.

Information Technology Equipment - Safety - Part 1 : General Requirements.

b) CAN/CSA C22.2 No.60950-1-07, Second Edition, Canadian Standards Association.

Information Technology Equipment - Safety - Part 1 : General Requirements.

c) EN 60950-1:2006 + A11:2009, European Committee for Electrotechnical Standardization (CENELEC).

Information Technology Equipment - Safety - Part 1 : General Requirements.

d) IEC 60950-1:2005, Second Edition,The International Electrotechnical Commission (IEC).

Information Technology Equipment - Safety - Part 1 : General Requirements.

7-2. EMC

a) ANSI C63.4 “American National Standard for Methods of Measurement of Radio-Noise

Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.”

American National Standards Institute (ANSI), 2003.

b) CISPR 22 “Information technology equipment – Radio disturbance characteristics – Limit and

methods of measurement." International Special Committee on Radio Interference

(CISPR), 2005.

c) CISPR 13 “Sound and television broadcast receivers and associated equipment – Radio disturbance

characteristics – Limits and method of measurement." International Special Committee on Radio

Interference (CISPR), 2006.

7-3. Environment

a) RoHS, Directive 2002/95/EC of the European Parliament and of the council of 27 January 2003

slide26

A

B

C

D

E

F

G

H

I

J

K

L

M

Year

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

Mark

A

B

C

D

E

F

G

H

J

K

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Mark

1

2

3

4

5

6

7

8

9

A

B

C

8. Packing

8-1. Designation of Lot Mark

a) Lot Mark

A,B,C : SIZE(INCH) D : YEAR

E : MONTH F ~ M : SERIAL NO.

Note

1. YEAR

2. MONTH

b) Location of Lot Mark

Serial No. is printed on the label. The label is attached to the backside of the LCD module.

This is subject to change without prior notice.

8-2. Packing Form

a) Package quantity in one box : 22 pcs

b) Box Size : 478x365x288mm

slide27

9. PRECAUTIONS

Please pay attention to the followings when you use this TFT LCD module.

9-1. MOUNTING PRECAUTIONS

(1) You must mount a module using holes arranged in four corners or four sides.

(2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the

module. And the case on which a module is mounted should have sufficient strength so that external

force is not transmitted directly to the module.

(3) Please attach the surface transparent protective plate to the surface in order to protect the polarizer.

Transparent protective plate should have sufficient strength in order to the resist external force.

(4) You should adopt radiation structure to satisfy the temperature specification.

(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the former

generates corrosive gas of attacking the polarizer at high temperature and the latter causes circuit break

by electro-chemical reaction.

(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or anything harder than HB

pencil lead. And please do not rub with dust clothes with chemical treatment.

Do not touch the surface of polarizer for bare hand or greasy cloth.(Some cosmetics are detrimental

to the polarizer.)

(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft materials like

chamois soaks with petroleum benzene. Normal-hexane is recommended for cleaning the adhesives

used to attach front / rear polarizers. Do not use acetone, toluene and alcohol because they cause

chemical damage to the polarizer.

(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer causes

deformations and color fading.

(9) Do not open the case because inside circuits do not have sufficient strength.

9-2. OPERATING PRECAUTIONS

(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage :

V=± 200mV(Over and under shoot voltage)

(2) Response time depends on the temperature.(In lower temperature, it becomes longer.)

(3) Brightness depends on the temperature. (In lower temperature, it becomes lower.)

And in lower temperature, response time(required time that brightness is stable after turned on) becomes

longer.

(4) Be careful for condensation at sudden temperature change. Condensation makes damage to polarizer or

electrical contacted parts. And after fading condensation, smear or spot will occur.

(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.

(6) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be

done by system manufacturers. Grounding and shielding methods may be important to minimized the

interference.

slide28

9-3. ELECTROSTATIC DISCHARGE CONTROL

Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that

treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly.

9-4. PRECAUTIONS FOR STRONG LIGHT EXPOSURE

Strong light exposure causes degradation of polarizer and color filter.

9-5. STORAGE

When storing modules as spares for a long time, the following precautions are necessary.

(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the

temperature between 5C and 35C at normal humidity.

(2) The polarizer surface should not come in contact with any other object.

It is recommended that they be stored in the container in which they were shipped.

9-6. HANDLING PRECAUTIONS FOR PROTECTION FILM

(1) When the protection film is peeled off, static electricity is generated between the film and polarizer.

This should be peeled off slowly and carefully by people who are electrically grounded and with well

ion-blown equipment or in such a condition, etc.

(2) The protection film is attached to the polarizer with a small amount of glue. If some stress is applied

to rub the protection film against the polarizer during the time you peel off the film, the glue is apt to

remain on the polarizer.

Please carefully peel off the protection film without rubbing it against the polarizer.

(3) When the module with protection film attached is stored for a long time, sometimes there remains a

very small amount of glue still on the polarizer after the protection film is peeled off.

(4) You can remove the glue easily. When the glue remains on the polarizer surface or its vestige is

recognized, please wipe them off with absorbent cotton waste or other soft material like chamois

soaked with normal-hexane.